Expansion pipe-joint.



W. H. RENN. EXPANSION PIPE JOINT. APPLIbATIoN rum) APR. 10, 1913.

1,090,086, Patented Mar. 10, 1914 the boiler and having one end connected with the said cylinder, whereby said box and shaft and housing may move by expansion or contraction independently of each other.

3. The combination with theirear end of a boiler, of a stuffing box arranged upon the exterior of the end of the boiler, a rock shaft passing through said box, a cylinder provided with packing and arranged Within the box, the said rock shaft passing movably lengthwise through said cylinder, the said box being constructed interiorly to receive said eylinder movably' and steam tight, and a housing surroundingthe said rock shaft 15 within the boiler and having one end connected with the saidcylinder, whereby said box and shaftand housing may move by expansion or contraction independently of each other. 20 In testimony whereof I aflix my signature in presence of two' witnesses. I

' WILLIAM H. RENN. Witnesses:

O. G. KING, J. C. CHAPPELL.

depict of this patent may be obtained for five cents each, by addressing the Commissioner of Eatenta.

' Washington, D. 0." 

